"220V AC Cooling Fan" brand especially professional brand. Brand is not the bigger the better, but the more refined the better. To understand what the depth of the first pillar of the brand products, choose a professional brand is rational; second to understand "220V AC Cooling Fan" brand of service outlets and soundness; the third from outside the Internet need to know about the brand More. Fans of the main components are: AC motor. "220V AC Cooling Fan" works: the coil is energized to rotate in a magnetic field force. Form of energy is transformed: the main electrical energy into mechanical energy, and because the coil has a resistance, so there is inevitably a part of electrical energy to be converted into heat.